lilolexi
lilolexi
19-09-2014
Mathematics
contestada
How do you do [tex] x^{2} -9x=15[/tex]
Respuesta :
Аноним
Аноним
19-09-2014
[tex]x^2-9x=15\\x^2-9x-15=0\\a=1;\ b=-9;\ c=-15\\\Delta=b^2-4ac\to\Delta=(-9)^2-4(1)(-15)=81+60=141\\\\x=\frac{-b\pm\sqrt\Delta}{2a}\to x=\frac{9\pm\sqrt{141}}{2}[/tex]
Answer Link
VER TODAS LAS RESPUESTAS ( 31+ )
Otras preguntas
Where did the word "atom" come from? How did Mendeleev's decide to organize his table Why is today's periodic table shaped the way it is? What would cause the s
Which of the following sentences is NOT an element of suspense?Select one:OIt creates anticipation due to uncertain situations.OIt can make readers emotional.OI
Help please! Will give brainliest!
NO JOKE 70 POINTS!!!!!!!! I WILL GIVE BRANLIEST AND RATE!!!! MATH EXPERTS COME HELP!!! AT LEAST TAKE A LOOK!!! LIKE WHERE ARE THE GENIUSES!!EASY I AM JUST DUMBR
want to persuad Did the creatoe others? Explain.
What does the ATOMIC MASS tell us about an atom? neutrons + electrons protons + electrons protons + neutrons
In order to prepare an optimal heat-fixed bacterial smear for staining, one must be aware of a couple of factors that may lead to poor results; briefly explain
find the area of this
10 is the sum of 1 and two times a number. Have to write it in number form
What is the volume of a box measuring 3cmX6cmX4cm
